<template>
  <div class="icons">
    <swiper :options="swiperOption">
      <swiper-slide v-for="(page, index) of pages" :key="index">
        <div class="icon" v-for="item of page" :key="item.id">
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl">
            <p class="icon-desc">{{ item.desc }}</p>
          </div>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'Icons',
  props: {
    iconsList: Array
  },
  data () {
    return {
      swiperOption: {
        autoplay: false
      }
    }
  },
  computed: {
    pages () {
      const pages = []
      this.iconsList.forEach((item, index) => {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import "~styles/variable.styl"
  @import "~styles/mixins.styl"
  .icons >>> .swiper-container
     height 0
     padding-bottom 50%
  .icons
     margin-top:.1rem
    .icon
       position: relative
       overflow: hidden
       float:left
       height:0
       width: 25%
       box-sizing border-box
       padding 0.1rem
       padding-bottom 25%
       .icon-img
          position absolute
          top:0
          left: 0
          right 0
          bottom: 0.44rem
          .icon-img-content
            display block
            height:100%
            margin: 0 auto
       .icon-desc
         position: absolute
         left:0
         right:0
         bottom:-0.30rem
         height:0.44rem
         line-height:0.44rem
         text-align center
         color:$darkTextColor
         ellipse()
</style>
